Francesco Borromini, San Carlo at the Four Fountains (San Carlino), Rome. Commissioned by Cardinal Francesco Barberini in 1634 for the Holy Order of the Trinity; construction began in 1638 and the church was consecrated in 1646.
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Francesco Borromini, San Carlo at the Four Fountains (San Carlino), Rome. Commissioned by Cardinal Francesco Barberini in 1634 for the Holy Order of the Trinity; construction began in 1638 and the church was consecrated in 1646.
source